Check The Flow Restrictor - GE AKTA avant User Manual

7.4.1

Check the flow restrictor

Maintenance interval
Check the back pressure for the flow restrictor every month.
Instruction
Follow the instruction to check the back pressure of Flow restrictor FR-902.
Step
1
2
3
4
5
6
ÄKTA avant User Manual 29035184 AE
Action
Immerse the piece of inlet tubing marked A1 in distilled water, and immerse
the piece of tubing from Outlet valve port W in a waste container.
In the System Control module, on the Manual menu, click Execute Manual
Instructions.
Result: The Manual instructions dialog opens.
In the Manual instructions dialog:
Select Flowpath:Injection valve, and select Manual Load. Click Insert.
•
Select Flowpath:Column valve, and select By-pass. Click Insert.
•
Select Flowpath:pH valve, and set the pH electrode to Off-line and the
•
Restrictor to In-line. Click Insert.
Select Flowpath:Outlet valve, and select Out-Waste. Click Insert.
•
Select Pumps and Pressures:System flow and set the Flow rate to 3.0
•
ml/min. Click Insert.
Click Execute.
•
Result: A system flow of 3.0 ml/min starts.
Note the PreC pressure displayed in the Run Data pane.
Tip:
If PreC pressure is not showing, click the Customize icon. In the Customize
dialog, under the Run Data Groups tab, select to view PreC pressure.
In the Manual instructions dialog:
Select Flowpath:pH valve, and set the pH electrode to Off-line and the
•
Restrictor to Off-line.
Click Execute.
•
Note the PreC pressure displayed in the Run Data pane.
7 Maintenance
7.4 Monthly maintenance
7.4.1 Check the flow restrictor
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